Exact(17)
For studies of smoking avoidance or cessation, we selected systematic reviews and meta-analyses, and searched for individual RCTs only where high-quality and current reviews and meta-analyses were not available.
Interestingly, in our study, 2 out of the 5 selected systematic reviews did not disclose their funding source [10], [29].
The flow of RCTs included in the selected systematic reviews and ongoing RCTs through the study is in Figures 1 and 2, respectively.
Table 1 shows the characteristics of selected systematic reviews and meta-analyses.
Selected systematic reviews included a range of 3 to 15 relevant articles.
Two reviewers independently examined the implications-for-practice paragraph in the conclusions sections of all selected systematic reviews.
Similar(43)
Part II then considers sources of quantitative evidence, selecting systematic cross-national and time-series indices from the Varieties of Democracy (V-Dem) project.
A total of 26 schools were randomly selected using systematic sampling (every one in 23 schools was selected systematically from the list).
The health facilities where the surveys were conducted were selected through systematic random sampling in the selected districts and the study participants were selected through simple random sampling.
Sample households were selected using systematic random sampling technique.
The charts reviewed were selected by systematic sampling from the list generated by the health record departments (described above).
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